how can we eliminate diplopia that apears after strabismus surgery?

Question

my sister has 22 years old.she had a little strabism in her left eye form childhood(lazy eye).3 years ago we deside to surgery her eye but unfortunately the doctor no skilled enough for this operation and eye devitation increased and eye,s muscle draged(drawed) more than it should be and diplopia(two vision) appeard.then we decide to second sergury.in this time devitation of eyes almost removed(a bit of this remined yet but eyes seem normally).but she is still suffering from diplopia and we try a variety of prism in offices of different ophthamologists and any of this prisms couldn,t help us.we live in iran.
for god sake please help us.

Answer 1

It sounds as though there is no fusion, the ability of the two eyes to "lock" two images into one. This is unfortunately not uncommon with late strabismus surgery.
If prisms have been tried, further surgery seems unlikely to help and the diplopia is intolerable, the only recourse is to suppress the image from one eye in as cosmetically acceptable and functional way as possible.

Sometimes a "wrong" spectacle Rx, deliberately over-plussing the non-dominant eye, can cause central suppression and the end of diplopia while the glasses are being worn. The glasses there would look perfectly normal.

There are various grades of clear but opticaly poor film which can be applied to glasses to produce a similar effect if the above does not work, without going to the extreme of a black or frosted lens on one side.
A high-tech answer to persistent diplopa can be a clear contact lens with a black pupil.
(I don't want to assume such are or aren't available in Iran)

Best wishes.
Optometrist, retired.

Answer 2

1

Answer 3

prism and more surgery are the only options. this happens quite a bit when adults have strab surgery.

Answer 4

did she has any tests of binocularity [ worth 4 dots test ] what was her results